CN112791290A

CN112791290A - Sputum suction and medicine injection type trachea cannula

Info

Publication number: CN112791290A
Application number: CN202110154192.1A
Authority: CN
Inventors: 曹青杨
Original assignee: First Affiliated Hospital of Zhengzhou University
Current assignee: First Affiliated Hospital of Zhengzhou University
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-05-14
Anticipated expiration: 2041-02-04
Also published as: CN112791290B

Abstract

The invention discloses a sputum-sucking and medicine-injecting type tracheal cannula, which belongs to the technical field of surgical medical equipment and comprises a main tube body, a sputum-sucking tube, a probe device, a medicine-injecting tube and a main inflation tube, wherein the top of the main tube body is connected with a breathing machine joint, the bottom of the main tube body is provided with a pin, the outer wall of the pin is provided with a protective layer, the protective layer is a mixture of gelatin and starch, a main airbag is arranged below the outer wall of the main tube body, and the main inflation tube is arranged on the right side of the main tube body. Has effective anti-reflux effect and avoids the pollution of the drug which is refluxed in the drug injection tube.

Description

Sputum suction and medicine injection type trachea cannula

Technical Field

The invention relates to the technical field of surgical medical equipment, in particular to a sputum suction and medicine injection type trachea cannula.

Background

The trachea cannula is a technology that a special trachea catheter is placed into a trachea through a glottis, and is called as trachea cannula, the technology can provide the best conditions for smooth air passage, ventilation and oxygen supply, respiratory tract suction, prevention of aspiration and the like, medicine is required to be fed through the trachea catheter in the using process, with the development of science and technology, the trachea cannula capable of injecting medicine is researched and invented, but when the existing trachea cannula is used, a medicine injection port and a sputum suction port do not have a backflow prevention function, medicine can flow back into the medicine injection pipe through the medicine injection port in the medicine injection process, when sputum is sucked, the sputum can flow back into the trachea from the sputum suction pipe, and when the existing trachea cannula is used, medicine injection and sputum suction operations are inconvenient to be carried out simultaneously, the medicine injection and sputum suction operation steps are separated, and the efficiency is low.

Disclosure of Invention

The invention aims to provide a sputum suction and medicine injection type trachea cannula, which solves the problems that the trachea cannula does not have a backflow prevention function, is inconvenient to perform medicine injection and sputum suction operations at the same time, has separated medicine injection and sputum suction operation steps and is low in efficiency.

In order to achieve the purpose, the invention provides the following technical scheme: a sputum and medicine injection type tracheal cannula comprises a main tube body, a sputum suction tube, a probe device, a medicine injection tube and a main inflation tube, wherein the top of the main tube body is connected with a breathing machine joint, the bottom of the main tube body is provided with a pin, the outer wall of the pin is provided with a protective layer which is a mixture of gelatin and starch, a main airbag is arranged below the outer wall of the main tube body, the main inflation tube is arranged on the right side of the main tube body, an auxiliary airbag is arranged in the middle of the outer wall of the main tube body, the main inflation tube is connected with the auxiliary airbag, the auxiliary airbag is communicated with the main airbag through a gas tube, a medicine injection port is arranged below the outer wall of the main tube body, a first silica gel backflow preventing gasket is arranged on the inner wall of the medicine injection port, the bottom of the medicine injection tube penetrates through the inside of the main tube body and is communicated with the medicine injection port, a sputum suction port is arranged, the utility model discloses a medicine injection device, including main pipe body, injection pipe, medicine injection port, flow limiting groove, medicine limiting plate, fixing ring, fixed ring, magnet, sensor, probe device installs in main pipe body front outer wall top, the top and the injection interface connection of injection pipe, the top of injection interface is equipped with into the medicine mouth, it is no less than a quantity of medicine mouth to advance the medicine mouth, vertically set up limited chute in the injection interface, limited chute with advance medicine mouth, injection pipe intercommunication, bottom left side is equipped with the flow limiting wall in the flow limiting groove, flow limiting wall top swing joint has the current limiting plate, injection interface outer wall below has cup jointed solid fixed ring, the spout has transversely been seted up in the fixed ring, it has the magnet to.

Preferably, the top of the sputum suction pipe is communicated with the sputum suction connector, the outer wall of the sputum suction connector is connected with a sealing cover through a rubber belt, the top of the main inflation pipe is connected with the main airbag display small bag, and the main airbag display small bag and the top of the main airbag display small bag are connected with the main airbag inflation interface.

Preferably, the probe device comprises a first blocking ring, a second blocking ring, a sleeve, a probe tube, a probe, an adjusting head and a light path hose, wherein the first blocking ring and the second blocking ring are both sleeved on the outer wall of the main tube body, the second blocking ring is positioned above the drug injection port, and the first blocking ring is positioned above the auxiliary air bag.

Preferably, the sleeve is arranged on the front surface of the outer wall of the main pipe body, the outer wall of the sleeve is attached to the inner wall of the auxiliary air bag, the probe is inserted into the sleeve, movable grooves I are longitudinally formed in the first blocking ring and the second blocking ring, the top of the probe penetrates through the movable grooves I to be connected with the adjusting head, and the bottom of the probe penetrates through the movable grooves I to be connected with the probe.

Preferably, a second movable groove is longitudinally formed in the adjusting head, the light path hose is located in the second movable groove, an adjusting valve is arranged in the adjusting head, and the light path hose and the probe are both connected with the adjusting valve.

Preferably, the main pipe body is longitudinally provided with a breathing hole groove, the middle part of the upper part in the sputum suction pipe is longitudinally provided with a first sputum outlet groove, the middle part of the lower part in the sputum suction pipe is longitudinally provided with a second sputum outlet groove, the middle part in the sputum suction pipe is provided with a buffer groove, and the first sputum outlet groove, the buffer groove and the second sputum outlet groove are mutually communicated.

Preferably, silica gel anti-return gasket two is installed to the dashpot inner wall, the splitter box has all vertically been seted up to the upper side left and right sides in the sputum aspirator, splitter box and dashpot intercommunication, the internal diameter of a sputum discharging groove is greater than the internal diameter of a sputum discharging groove two.

Preferably, the bottom of the sputum suction pipe is positioned in the main pipe body, and a chamfer is arranged at the joint of the bottom of the sputum suction pipe and the sputum suction port.

Compared with the prior art, the invention has the beneficial effects that:

1) the protective layer is arranged on the outer wall of the pin, so that when the pin is inserted into a trachea, the damage to the trachea is reduced, the pain of a patient is relieved, and meanwhile, the mixture of gelatin and starch can be dissolved by a human body, so that the novel tracheal cannula is safe and reliable and has no side effect.

2) The invention is provided with the probe device which is connected with the external display equipment, so that the condition in the trachea can be observed more clearly and intuitively, the condition in the trachea can be judged, and the effects of medicine injection and sputum suction can be conveniently checked.

3) According to the invention, the silica gel anti-backflow gasket I is arranged on the inner wall of the drug injection port, the drug is pressurized in the drug injection pipe, the pressure in the drug injection pipe is greater than the pressure outside the drug injection port, the silica gel anti-backflow gasket I is opened, the drug enters the trachea from the drug injection port, the pressurization in the drug injection pipe is stopped after the drug injection is finished, and the silica gel anti-backflow gasket I is closed, so that the drug cannot enter the drug injection pipe from the drug injection port, an effective anti-backflow effect is achieved, and the drug in the drug injection pipe is prevented from being polluted by backflow drugs.

4) When the sputum suction device is operated, the medicine needs to be injected to dilute the sputum in the trachea, when the sputum is conveniently sucked out, the medicine is input into the medicine injection tube, the sputum suction connector is externally connected with the sputum suction device, the sputum suction device works to generate negative pressure in the sputum suction tube, the sputum in the trachea between the main airbag and the auxiliary airbag is sucked out, meanwhile, the negative pressure is generated in the sputum suction tube due to the fixed pressure between the main airbag and the auxiliary airbag, so that the negative pressure is generated in the trachea between the main airbag and the auxiliary airbag, at the moment, the pressure in the medicine injection tube is greater than the pressure between the main airbag and the auxiliary airbag, once the silica gel anti-backflow gasket is opened, the medicine enters the trachea, is mixed with the sputum in the trachea and is sucked out by the suction tube, the simultaneous operation of medicine injection and sputum suction is realized, and.

5) The medicine injection device is provided with the plurality of medicine inlets, different medicines can be injected into the medicine injection interfaces during medicine injection, various medicines do not need to be frequently replaced, time is saved, and the flow limiting sheet can be driven to rotate through the sliding magnetic block, so that the medicine injection flow can be more conveniently adjusted.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the injection tube of the present invention;

FIG. 3 is a schematic view of the inner structure of the sputum aspirator of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 1 according to the present invention;

FIG. 5 is a top view of the administration adapter of the present invention;

FIG. 6 is a schematic view of the internal structure of the chemical injection connector of the present invention.

In the figure: the device comprises a main tube body 1, a breathing machine joint 2, a sputum suction tube 3, a sputum suction joint 4, a drug injection interface 5, a drug injection tube 6, an adjusting head 7, an optical channel hose 8, a probe tube 9, a baffle ring I10, a sleeve tube 11, a main balloon 12, a protective layer 13, a base 14, a main balloon inflation interface 15, a main balloon display small balloon 16, a main inflation tube 17, a baffle ring II 18, a probe 19, a drug injection port 20, a sputum suction port 21, an auxiliary balloon 22, a shunt groove 23, a silica gel backflow-preventing gasket II 24, a breathing hole groove 25, a sputum outlet groove I26, a buffer groove 27, a sputum outlet groove II 28, a fixing ring 29, a drug inlet 30, a magnetic block 31, a flow limiting groove 32, a flow limiting wall 33 and a flow limiting sheet 34.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example (b):

referring to fig. 1-6, the present invention provides a technical solution: a sputum suction and medicine injection type tracheal cannula comprises a main tube body 1, a sputum suction tube 3, a probe device, a medicine injection tube 6 and a main inflation tube 17, wherein the top of the main tube body 1 is connected with a breathing machine connector 2, the breathing machine connector 2 is connected with a breathing machine, a patient breathes with the breathing machine through a breathing hole groove 25, the bottom of the main tube body 1 is provided with a pin 14, the outer wall of the pin 14 is provided with a protective layer 13, the protective layer 13 is a mixture of gelatin and starch, the protective layer 13 can prevent the pin 14 from damaging the trachea and relieve the pain of the patient, meanwhile, the protective layer 13 can be dissolved by a human body, a main airbag 12 is arranged below the outer wall of the main tube body 1, the main inflation tube 17 is arranged on the right side of the main tube body 1, an auxiliary airbag 22 is arranged in the middle part of the outer wall of the main tube body 1, the main inflation tube 17 is connected with the auxiliary, the auxiliary air bag 22 and the main air bag 12 can be inflated through the main inflation tube 17, so that the operations of medicine injection and sputum suction are convenient to carry out, a medicine injection port 20 is arranged below the outer wall of the main tube body 1, a first silica gel anti-backflow gasket is arranged on the inner wall of the medicine injection port 20, the bottom of the medicine injection tube 6 penetrates through the inside of the main tube body 1 and is communicated with the medicine injection port 20, medicine is pressurized in the medicine injection tube 6, the pressure in the medicine injection tube 6 is greater than the pressure outside the medicine injection port 20, the first silica gel anti-backflow gasket is opened, the medicine enters the trachea from the medicine injection port 20, the pressurization in the medicine injection tube 6 is stopped after the medicine injection is finished, the first silica gel anti-backflow gasket is closed, so that the medicine cannot enter the medicine injection tube from the medicine injection port, an effective anti-backflow effect is achieved, the pollution of the medicine which flows back in the medicine injection tube 6 is avoided, a sputum suction port 21 is arranged below the medicine injection port 20, the bottom of the sputum suction tube 3 penetrates through the, the sputum suction pipe can be externally connected with a sputum suction device, the sputum suction device works to enable negative pressure to be generated in the sputum suction pipe 3 to suck out sputum in an air pipe between the main airbag 12 and the auxiliary airbag 22, meanwhile, the negative pressure is generated in the air pipe between the main airbag 12 and the auxiliary airbag 22 due to the negative pressure generated in the sputum suction pipe 3, at the moment, the pressure in the medicine injection pipe 6 is larger than the pressure in the air pipe between the main airbag 12 and the auxiliary airbag 22, once the silica gel anti-backflow gasket is opened, medicine enters the air pipe and is sucked out by the sputum suction pipe 3 after being mixed with the sputum in the air pipe, the simultaneous operation of medicine injection and sputum suction is realized, the probe device is arranged above the outer wall of the front side of the main pipe body 1, the probe device can be externally connected with a display device, the condition in the air pipe can be observed more clearly and intuitively, the condition inside the air pipe can be judged, the effects of medicine injection and sputum suction can be conveniently checked, the top of, the top of the medicine injection interface 5 is provided with a medicine inlet 30, the number of the medicine inlet 30 is not less than 2, different medicines can be injected into the medicine injection interface 5 during medicine injection, various medicines do not need to be frequently replaced, time is saved, a limited flow groove 32 is longitudinally formed in the medicine injection interface 5, the limited flow groove 32 is communicated with the medicine inlet 30 and the medicine injection pipe 6, the left side of the bottom in the limited flow groove 32 is provided with a flow limiting wall 33, the medicines enter the limited flow groove 32 and are limited by the flow limiting wall 33, the top of the flow limiting wall 33 is movably connected with a flow limiting sheet 34, a fixing ring 29 is sleeved below the outer wall of the medicine injection interface 5, a sliding groove is transversely formed in the fixing ring 29, the sliding groove is connected with a magnet 31 in a sliding mode, the flow limiting sheet 34 and the magnet 31 are mutually attracted, the sliding magnet 31 can drive the flow limiting sheet 34 to rotate, and when the flow limiting sheet 34 rotates, the medicines can only flow out from a gap between the flow limiting sheet 34 and the flow, thereby more conveniently adjusting the flow of the injected medicine.

The top of the sputum suction pipe 3 is communicated with the sputum suction connector 4, the outer wall of the sputum suction connector 4 is connected with a sealing cover through a rubber belt, the sputum suction connector 4 can be sealed, the top of the main inflation pipe 17 is connected with the main airbag display small bag 16, the main airbag display small bag 16 can display the air pressure in the main airbag 12 and the auxiliary airbag 22, and the main airbag display small bag 16 and the top of the main airbag display small bag are connected with the main airbag inflation interface 15.

The probe device comprises a first blocking ring 10, a second blocking ring 18, a sleeve 11, a probe 9, a probe 19, an adjusting head 7 and a light path hose 8, wherein the first blocking ring 10 and the second blocking ring 18 are all sleeved on the outer wall of the main pipe body 1, the second blocking ring 18 is positioned above the medicine injection port 20, the first blocking ring 10 is positioned above the auxiliary air bag 22, and the first blocking ring 10 and the second blocking ring 18 are used for fixing the probe 9.

The sleeve 11 is installed on the front surface of the outer wall of the main pipe body 1, the outer wall of the sleeve 11 is attached to the inner wall of the auxiliary air bag 22, the probe 9 is inserted into the sleeve 11, the first baffle ring 10 and the second baffle ring 18 are both longitudinally provided with a first movable groove, the top of the probe 9 penetrates through the first movable groove to be connected with the adjusting head 7, and the bottom of the probe 9 penetrates through the first movable groove to be connected with the probe 19.

The adjusting head 7 is internally and longitudinally provided with a second movable groove, the light path hose 8 is positioned in the second movable groove, the adjusting head 7 is internally provided with an adjusting valve, the light path hose 8 and the probe tube 9 are both connected with the adjusting valve, the adjusting head 7 is externally connected with a display device, and the light path hose 8 is controlled to adjust the angle of the probe 19 through the probe tube 9 so as to probe the trachea.

The main pipe body 1 is internally and longitudinally provided with a breathing hole groove 25, the middle part of the upper part in the sputum suction pipe 3 is longitudinally provided with a first sputum outlet groove 26, the middle part of the lower part in the sputum suction pipe 3 is longitudinally provided with a second sputum outlet groove 28, the middle part in the sputum suction pipe 3 is provided with a buffer groove 27, and the first sputum outlet groove 26, the buffer groove 27 and the second sputum outlet groove 28 are mutually communicated.

Silica gel anti-return gasket two 24 is installed to buffer slot 27 inner wall, shunt slot 23 has all vertically been seted up to the upper side left and right sides in inhaling phlegm pipe 3, shunt slot 23 and buffer slot 27 intercommunication, a 26 internal diameters of phlegm groove is greater than the internal diameter of a two 28 phlegm grooves, when producing the negative pressure in inhaling phlegm pipe 3, silica gel anti-return gasket two 24 is opened, the mixture of medicine and phlegm passes through buffer slot 27 via a two 28 phlegm grooves and gets into a 26 phlegm groove, by the suction of phlegm suction equipment, the mixture is at the in-process by the suction, because the internal diameter of a 26 phlegm groove is greater than the internal diameter of a two 28 phlegm grooves, a part of mixture can produce the backward flow in a phlegm groove 26, the mixture of backward flow is blockked by a two 24 silica gel anti-return gasket, by the suction via shunt slot 23, the effectual condition of mixture production backward flow in inhaling phlegm pipe 3 of having avoided.

The bottom of the sputum suction pipe 3 is positioned in the main pipe body 1, and a chamfer is arranged at the joint of the bottom of the sputum suction pipe 3 and the sputum suction port 21, so that sputum can be sucked out more easily.

The working principle is as follows: the tube pins 14 are inserted into the trachea, the protective layer 13 can prevent the tube pins 14 from damaging the trachea, the pain of a patient is relieved, meanwhile, the protective layer 13 can be dissolved by a human body, the adjusting head 7 is externally connected with display equipment, the control light channel hose 8 adjusts the angle of the probe 19 through the probe tube 9, the detection is carried out in the trachea, when the probe 19 reaches a position needing to be operated in the trachea, the auxiliary airbag 22 and the main airbag 12 are inflated through the main airbag inflation interface 15, medicine is input into the medicine injection tube 6, the sputum suction joint 4 is externally connected with sputum suction equipment, the sputum suction equipment works to generate negative pressure in the sputum suction tube 3 and suck out the air in the trachea between the main airbag 12 and the auxiliary airbag 22, meanwhile, the negative pressure in the medicine injection tube 6 is larger than the pressure in the trachea between the main airbag 12 and the auxiliary airbag 22 due to the negative pressure generated in the sputum suction tube 3, first the opening of silica gel anti-reflux gasket, the medicine gets into in the trachea, be inhaled phlegm pipe 3 aspirations with the phlegm mixture in the trachea, the injection has been realized, inhale the operation that the phlegm goes on simultaneously, when inhaling the interior negative pressure that produces of phlegm pipe 3, two 24 openings of silica gel anti-reflux gasket, the mixture of medicine and phlegm gets into out phlegm groove 26 through buffer tank 27 via two 28 of a phlegm groove, by the suction of phlegm equipment suction, the mixture is at the in-process by the suction, because the internal diameter that goes out phlegm groove one 26 is greater than the internal diameter that goes out phlegm groove two 28, a mixture part can produce the backward flow in a phlegm groove 26, the mixture of backward flow is blockked by two 24 of silica gel anti-reflux gaskets, by the suction via splitter box 23, the effectual condition of avoiding the mixture to produce the backward flow in phlegm pipe 3 of inhaling.

While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a inhale phlegm injection type trachea cannula, includes main pipe body (1), inhales phlegm pipe (3), probe unit, injection pipe (6), main gas tube (17), its characterized in that: the main tube body (1) is connected with a breathing machine connector (2) at the top, a base pin (14) is arranged at the bottom of the main tube body (1), a protective layer (13) is arranged on the outer wall of the base pin (14), the protective layer (13) is a mixture of gelatin and starch, a main airbag (12) is arranged below the outer wall of the main tube body (1), a main inflation tube (17) is arranged on the right side of the main tube body (1), an auxiliary airbag (22) is arranged in the middle of the outer wall of the main tube body (1), the main inflation tube (17) is connected with the auxiliary airbag (22), the auxiliary airbag (22) is communicated with the main airbag (12) through a gas tube, a medicine injection port (20) is arranged below the outer wall of the main tube body (1), a silica gel backflow-preventing gasket I is arranged on the inner wall of the medicine injection port (20), and the bottom of the medicine injection tube (6) penetrates through the inside, the sputum suction port (21) is arranged below the drug injection port (20), the bottom of the sputum suction pipe (3) penetrates through the inside of the main pipe body (1) and is communicated with the sputum suction port (21), the probe device is arranged above the outer wall of the front side of the main pipe body (1), the top of the drug injection pipe (6) is connected with the drug injection port (5), the top of the drug injection port (5) is provided with a drug inlet (30), the number of the drug inlets (30) is not less than 2, a limited chute (32) is longitudinally arranged in the drug injection port (5), the limited chute (32) is communicated with the drug inlet (30) and the drug injection pipe (6), the left side of the bottom in the limited chute (32) is provided with a flow limiting wall (33), the top of the flow limiting wall (33) is movably connected with a flow limiting sheet (34), a fixing ring (29) is sleeved below the outer wall of the drug injection port (5), and a chute is transversely arranged in the fixing ring (29), the magnetic block (31) is connected in the sliding groove in a sliding mode, and the current limiting sheet (34) and the magnetic block (31) are mutually attracted.

2. The trachea cannula for sputum suction and drug injection according to claim 1, wherein: the top of the sputum suction pipe (3) is communicated with the sputum suction connector (4), the outer wall of the sputum suction connector (4) is connected with a sealing cover through a rubber belt, the top of the main inflation pipe (17) is connected with the main airbag display small bag (16), and the main airbag display small bag (16) and the top are connected with the main airbag inflation connector (15).

3. The trachea cannula for sputum suction and drug injection according to claim 1, wherein: the probe device comprises a first blocking ring (10), a second blocking ring (18), a sleeve (11), a probe tube (9), a probe (19), an adjusting head (7) and a light path hose (8), wherein the first blocking ring (10) and the second blocking ring (18) are all sleeved on the outer wall of the main tube body (1), the second blocking ring (18) is located above the medicine injection port (20), and the first blocking ring (10) is located above the auxiliary air bag (22).

4. The trachea cannula for sputum suction and drug injection according to claim 3, wherein: the sleeve (11) is installed on the front surface of the outer wall of the main pipe body (1), the outer wall of the sleeve (11) is attached to the inner wall of the auxiliary air bag (22), the probe pipe (9) is inserted into the sleeve (11), a first movable groove is longitudinally formed in each of the first baffle ring (10) and the second baffle ring (18), the top of the probe pipe (9) penetrates through the first movable groove to be connected with the adjusting head (7), and the bottom of the probe pipe (9) penetrates through the first movable groove to be connected with the probe (19).

5. The trachea cannula for sputum suction and drug injection according to claim 3, wherein: the adjustable probe is characterized in that a second movable groove is longitudinally formed in the adjusting head (7), the light path hose (8) is located in the second movable groove, an adjusting valve is arranged in the adjusting head (7), and the light path hose (8) and the probe tube (9) are connected with the adjusting valve.

6. The trachea cannula for sputum suction and drug injection according to claim 1, wherein: the main pipe body (1) is internally and longitudinally provided with a breathing hole groove (25), the upper middle part in the sputum suction pipe (3) is longitudinally provided with a first sputum outlet groove (26), the lower middle part in the sputum suction pipe (3) is longitudinally provided with a second sputum outlet groove (28), the middle part in the sputum suction pipe (3) is provided with a buffer groove (27), and the first sputum outlet groove (26), the buffer groove (27) and the second sputum outlet groove (28) are mutually communicated.

7. The trachea cannula for sputum suction and drug injection according to claim 6, wherein: silica gel anti-return gasket two (24) are installed to buffer slot (27) inner wall, splitter box (23) have all vertically been seted up to the upper side left and right sides in inhaling phlegm pipe (3), splitter box (23) and buffer slot (27) intercommunication, it is greater than the internal diameter of a phlegm groove two (28) to go out phlegm groove one (26) internal diameter.

8. The trachea cannula for sputum suction and drug injection according to claim 1, wherein: the bottom of the sputum suction pipe (3) is positioned inside the main pipe body (1), and a chamfer is arranged at the joint of the bottom of the sputum suction pipe (3) and the sputum suction port (21).